First up I think the title 'Studio 24' is a little misleading. What you get is 8 mono channels and 4 stereo (manufacturers always count each stereo channel as 2 channels to sound impressive), plus 8 tape returns and 2 stereo aux returns.
It's a real good mixer for the price - versatile, clean sounding and the insert on all the channels, groups and main out enable you to add extra processing to get the mixes pumpin.
I goota say though that my mixer fried itself about 2 days before the warranty expired. It was fully replaced, the company saying that there was a fault in the manufacture of it. Whether this was amn isolated case or they are a problematic mixer I don't know. I've had no problems since and am more than happy with it.
I don't give it a full 10 because it's cramped, and also because my first one died. Otherwise - evrything's cool.